Interested on your project but there's a lag in information between the team and the investors.
I sent some bitcoins to my deposit address and was credited with 60 tokens. Thought the coins were to be distributed after 20th of January.
But yet I don't know what's the price of a token was and most of the site is not functional.

Proof of stake is not that popular, it came as a hype and a rewarding way but it does not solve anything. Masternodes are much more popular as they are an alternative to power hungry mining process.

Vechain's business model offers a long term positive gain. But the most gain you get is by trading in the market crest and trough.
I too used to hold vechain bought it around $0.2 and sold all of them when the market was around $6 gaining some quick profit.

It's one of the best time to invest.
The entire world is embracing cryptocurrencies.
The price is relatively lower now.
And we've seen a basic trend of increase in price of coins (useful ones not every scams) every year for last few years.

I believe we already have some working projects.
https://bountyportals.com by beloved member irfan_pak10 with very good in forum and outside support.
https://bountyplatform.io this is one very good with options.

I had a very bad experience with bittrex. They are problematic and their support is useless. Binance is just too easy to use and have no bugs. Though I don't have a contact to its support yet, I believe they'd be fine as there seems no complain about the exchange.

Bittrex is already obsolete with its different issues and lack of proper support.
There are may Exchanges trying to complete this void. Binance and Kucoin among the most user friendly.

Tutellus is one of the leading online multimedia learning platform operating since 2o13, currently the company has over 120,000 video courses, one million students in 160 countries, and agreements with over 80 Universities and Business Schools. And now are shifting to a token payment system to replace the traditional payment.

The current rise in this particular coin is shady. It is generating higher votes in every exchanges and being listed in popular exchanges with highest votes.
Seems like a whale pumping this coin.

The fate of bitcoin to some extent would be decided in 2018. Whether it remains as a valuable assets or will be replaced by other faster cheaper and efficient coins.

For me it would be Komodo.
I don't find EOS a profitable platform yet.
And waves lacks professionalism and is not getting enough clients for it's already working platform.

Dogecoin can't be considered as an investment. It's mainly focused for daily uses like tipping.
Though it can be used for diversifying your portfolio. There are many other options that may bring better profit.

Considering every circumstances, GPU mining Ethereum would be much more beneficial than anything else.
Ethereum and GPU's both have future as the crypto world would slowly leave behind the energy hungry mining process to some other technologies cheaper and safer.

Ripple is going through same phase what bitcoin went between Early November 2017 to Mid December 2017.
It's the fiat based large investors and hedge funds jumping into them.

Cardano is still in its developing phase and has quite a community. I too am a close follower of its update but I don't intend to jump on it yet considering it's cap and time it may require to deliver.

And as STUT may remain as a grading index for quite a time and will not have immediate trade-able value, the platform will test and define better ways of granting them and preventing frauds.
It's the TUT tokens that are being issued which would work as a payment system in replace of already working fiat based system in the platform.

I would like to add another popular platform here
Tutellus https://www.tutellus.io/ has a working video learning platform (spanish) since 2013.
You can visit the platform https://www.tutellus.com
And they are having an pre-sale of tokens soon which is intended to ease the payment between tutors and learners of the platform.

That definitely would be a hurdle for the team. Most probably they'd make an automated system for measuring such progress. But when value comes with progress, there can be many way to cheat the system. Though no student would probably pay to self learning platform to cheat and win.

Freebitcoin for me is mostly a wallet with low fees and constant interest rate.
The one thing that would make me love freebitco.in more is the adding an option to lock multiply btc.
A suggestion, mine monero with the browser mining and change it to bitcoins. Bitcoin mining with PC are not profitable at all.

Onecoin is a ponzi banned in many countries. They expanded hugely with p2p networking and extensive on person seminars on different countries.
Not to be confused with xunlei's onecoin which to prevent from the confusion has renamed itself Linktoken or Lianke.